My name is Jake. I can't tell you my last name, or where I'm from. That would just help the Yeerks. They'd love to find me and my friends. They'd love to know who we are, even what we are. Knowing my last name isn't important for you. What you need to know is that everything I'll tell you here is true. It's real. It's actually happening. Right now. The Yeerks are among us. The Yeerks are us. They're a parasitic species. They live inside the bodies of other beings. They take over your mind and body. Controllers. That's what you call a creature that is ruled by a Yeerk. A Controller. Something that looks human, acts human, sounds human, but whose mind is Yeerk. They are everywhere. They can be anyone. Think of the one person in the whole world that you trust the most. Think of that one special per son. And now realize, believe, accept the fact that they might not be the person you think they are. Deal with the reality that behind those friendly, loving eyes lives a gray slug. That's what a Yeerk looks like in its natural state.